These cards had a gimmick whereby they could be scanned with the Nintendo e-Reader to unlock special mini-games and other exclusive information
This card is going to get people killed

Top 10 Partner Pairings Frodo, Adventurous HobbitFrodo, Adventurous Hobbit & Sam, Loyal AttendantSam, Loyal Attendant: 12393 Haldan, Avid ArcanistHaldan, Avid Arcanist & Pako, Arcane RetrieverPako, Arcane Retriever: 6602 Ardenn, Intrepid ArchaeologistArdenn, Intrepid Archaeologist & Rograkh, Son of RohgahhRograkh, Son of Rohgahh: 5868 Okaun, Eye of ChaosOkaun, Eye of Chaos &Zndrsplt, Eye of WisdomZndrsplt, Eye of Wisdom: 5848 Tymna the WeaverTymna the Weaver & Kraum, Ludevic's OpusKraum, Ludevic's Opus: 5838 Sakashima of a Thousand FacesSakashima of a Thousand Faces & Krark, the ThumblessKrark, the Thumbless: 4390 Thrasios, Triton HeroThrasios, Triton Hero & Tymna the WeaverTymna the Weaver: 4366 Burakos, Party LeaderBurakos, Party Leader & Folk HeroFolk Hero: 3454 Cazur, Ruthless StalkerCazur, Ruthless Stalker & Ukkima, Stalking ShadowUkkima, Stalking Shadow: 3446 Breeches, Brazen PlundererBreeches, Brazen Plunderer & Malcolm, Keen-Eyed NavigatorMalcolm, Keen-Eyed Navigator: 3430 Here's the thing, though: I don't think this list is actually interesting

The Shadowless variation of the first edition holo Charizard card is considered one of the most valuable and sought-after cards in the Pokmon trading card game